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Force - Definition, Examples, Unit, Characteristics, FAQs

Force - Definition, Examples, Unit, Characteristics, FAQs

Edited By Vishal kumar | Updated on Jul 02, 2025 04:29 PM IST

Force is a fundamental concept in physics that represents an interaction that causes changes in the state of motion of objects. Forces are essential in understanding and predicting physical phenomena. Force can cause an object to accelerate, slow down, or change the direction of motion. The article covers what force is in physics, the force formula, force applications, the SI unit, and the dimensional formula of force, types of forces with examples, and characteristics of force

This Story also Contains
  1. What is Force in Physics
  2. Force Formula
  3. Forces Applications In Everyday Life
  4. S.I. Unit and Dimensional Formula of Force
  5. Types of Forces With Examples
  6. Differences Between Contact and Non-Contact Forces
  7. Causes of Force
  8. Characteristics of Force
Force - Definition, Examples, Unit, Characteristics, FAQs
Force - Definition, Examples, Unit, Characteristics, FAQs

Understanding Force: The Basics

The term force means push or pull, an external agent that has the ability to change the state of a body. If a body is applied by some external force, it can bring a moving body to rest, as well as Force can bring a body at rest into motion. S. Isaac Newton introduced the concept of Force in his famous book Principia Mathematica in 1687.

What is Force in Physics

Force is an externally applied agent to a body that has the tendency to change the state of motion of a body. Mathematically, the Force acting on a body is defined as the rate of change in momentum of a body.

Force Formula

Mathematically, the formula for force is written as

F=ma

where,

This equation F=ma, is known as the Force equation.

Forces Applications In Everyday Life

Some of the most common examples of force in everyday life are:

  1. When we hit a ball with the bat while playing sports, the ball moves in a particular direction due to the force acting on it by the bat.
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FORCE EXAMPLE

2. When we push a door, it changes its position and gets opened or closed, and this is due to the force acting on it with our hands.

EXAMPLE OF FORCE

S.I. Unit and Dimensional Formula of Force

  • The SI unit of Force is Newton, named after the scientist Sir Isaac Newton, denoted by N.
  • 1N is defined as the force acting on a moving body having an acceleration of 1 $\mathrm{m} / \mathrm{s}^2$ m/s2 and having a mass of 1 kg. And in the CGS unit system, the Unit of force is $g \frac{c m}{s^2}$ gcms2.

The dimensional formula

We know that F = ma

dimensional formula of [m] = [M]

dimensional formula of a = vt = [LT2]

Substituting these in the equation, we get

[F] = $\left[\mathrm{M} L \mathrm{~T}^{-2}\right]$[ML T2]

The dimensional formula of force is,

[F] = $\left[\mathrm{M} L \mathrm{~T}^{-2}\right]$[ML T2]

Types of Forces With Examples

Mainly, Force can be categorized into two types, namely;

  1. Contact Forces
  2. Non-Contact Forces

Differences Between Contact and Non-Contact Forces

Contact ForcesNon-contact Forces
• These kinds of forces are caused by actual contact between two bodies physically.• These kinds of forces are caused without actual physical contact between two bodies
• There is no field linked with the contact force.• There is always a field linked with non-contact force.
• Example: Frictional force, Normal Force• Example: Gravitation, Electrostatic Force

Various types of Contact Forces:

  1. Force acting on a rope, Tension Force.
  2. Force acting on a spring, Spring Force.
  3. Frictional Force.
  4. Force due to Air resistance.
  5. Normal Force
  6. Applied Force

1. Force acting on a rope, Tension Force

When we pull a rope or string, or any cable, the force acting on the rope in the direction of its length is called the Tension force. It is denoted by T. If a rope is released from a pulley and the rope is moving downward with acceleration a and mass m, then the tension force is written as

T=ma+mg

Force acting on a rope

2. Force acting on a spring, Spring Force

Whenever a spring is stretched to some length, the spring always has a restoring force to bring it to its original state, and such restoring force is called spring force, which is calculated by Hooke’s law as

F=−Kx

where,

  • x is the distance to which the spring is stretched
  • k is the spring constant, and the negative sign shows that the spring force is a restoring force.

Hooke's law

3. Frictional Force

When two bodies are in contact and tend to slide over each other, then the force that opposes the relative motion between two bodies over their contact is called the Frictional force.

Frictional force

The frictional force is mainly of two types:

The types of frictional forces are given below with explanations.

Static FrictionKinetic Friction
• The frictional force between the contact of two bodies that causes no relative motion between these two bodies• The frictional force between the contact of two bodies that causes relative motion between these two bodies
• The coefficient of the static friction is greater than the coefficient of the kinetic friction• The coefficient of kinetic friction is less than the coefficient of static friction.
• It opposes the starting of motion• It opposes the relative motion of the object with respect to the surface
• It depends on the magnitude of the applied force.• It is independent of the magnitude of the applied force.
• $f_s=\mu_s F_N$fs=μsFN

• $f_k=\mu_k F_N$ fk=μkFN


4. Force due to air resistance

When a body is moving through the atmosphere then the particles of the air come in contact with the moving body, hence opposing the motion of the body in the air. This type of resistance force produced due to air is known as Air resistance. Also, when a body moves in a fluid like water then opposing force due to water or any fluid is known as retarding force.

Force due to air resistance

5. Normal Force

When two bodies are in contact with each other, the force normal to the surface of contact is called the normal force. For example, if an object is placed on a table, then the force on the object perpendicular to the table is called the normal force.


Normal Force

6. Applied Force

As the word suggests, the applied force is considered when a body applies some force on any other body, which brings a change in the direction or velocity of the body; such forces are called applied forces.

Applied Force on block kept on table

Applied Forces are mainly of three kinds:

  • Push: When we push an object to change its position, such as pushing a door to open or close in everyday life, it is an example of applied force.
  • Pull: When we pull some object, such as pulling a rope over a pulley is an example of applied force.
  • Drag: When a body is moved against any other body such as a body moving in fluid or air, such retarding forces acting on the body to oppose its relative motion are examples of air drag and fluid drag forces.

Various Kinds of Non-Contact Forces:

  1. Gravitational force
  2. Electrostatic force
  3. Magnetic force
  4. Nuclear force

1. Gravitational Force

It was first S. Isaac Newton who gave the concept of Gravitational force, which is defined as the attractive force acting between two bodies that have mass and are separated by some finite distance, and this force acts on every object in the universe. Mathematically, if two bodies have masses m1 and m2 and are separated by a distance of r, then the Gravitational force F is calculated as

$F_g=G \frac{m_1 m_2}{r^2}$

where,

G is called the Gravitational constant, which has a fixed value of G=6.67×10−11 $\frac{\mathrm{N} \cdot \mathrm{m}^2}{\mathrm{~kg}^2}$.Nm2 kg2

Gravitational Force

2. Electrostatic Force

It was Coulomb who introduced the concept of electrostatic force. The force acting between two static charged particles having definite charge magnitude and separated by some finite distance is called the electrostatic force. Mathematically, if two charged particles have charges q1 and q2 and are separated by a distance r, then the electrostatic force F is calculated as

$F=k \frac{q_1 q_2}{r^2}$

where,

ε0 $\varepsilon_0$ = $8.85 \times 10^{-12} \mathrm{C}^2 / \mathrm{N}-\mathrm{m}^2$ 8.85×1012C2/Nm2is known as the permittivity of free space.

Electrostatic Force

3. Magnetic force

If a charged particle is moving in a uniform magnetic field, then the charged particle experiences a force due to the presence of a magnetic field, and such forces are called magnetic forces. Mathematically, if a charged particle is moving with velocity vector v, and the magnetic field vector is B, and the charge has a magnitude of q, then the magnetic force F is calculated as

F=q(v×B)

Hence, all quantities of Force, Magnetic field, and velocity are perpendicular to each other.

Magnetic force

4. Nuclear force

Nuclear force is the fundamental force that binds protons and neutrons (nucleons) together within the nucleus. This nuclear force holds the protons or neutrons together despite their charges are similar in nature.

Nuclear force is of two types:

  • Weak nuclear force- This force plays an important role in nuclear fission. This force is responsible for Radioactive decay, like beta decay.
  • Strong nuclear force- It is the strongest force that exists in nature. This force is responsible for the binding of two similarly charged atoms, but its range is the smallest (up to a few angstroms).

Causes of Force

Whenever a body experiences a force on it, it changes its state of motion, such as a moving body comes to rest or increases or decreases its velocity when a body at rest starts moving. Every force has its cause, and various most common force experiences are listed as:

  1. Falling of a body. Whenever a body falls, it experiences a force, and the cause of this force is gravity, which is due to the gravitational pull of the Earth towards the body.
  2. Bending of a moving charged particle in the presence of a magnetic field. The magnetic field is the cause of the force experienced by a moving charged particle and hence changes its direction in the presence of the magnetic field.
  3. To push an object away from the body and to pull an object towards the body is the main cause of force experienced on the body.

Characteristics of Force

Some of the main characteristics of force are listed as:

  1. Force brings the change in velocity or direction of a body, when the applied force may experience a change in its velocity or change in its direction. For example, when we apply some force on a stationary body, it gets some velocity and changes its position.
  2. Force is always defined by two parameters, one is magnitude, such that it will always have some definite magnitude as well as a particular direction. For example, a body moving in a circular path experiences a centripetal force that has a definite value and direction always towards the center.
  3. If a body is at rest, then it means all the net forces acting on it are zero, and forces are added using the rules of vector algebra.
  4. The force applied to a certain area creates pressure.
  5. Force can change the shape of an object by producing stress on the object.
  6. When two forces act on an object, the net force is
  • The sum of the forces acts in the same direction
  • Difference of the forces if the forces act in the opposite direction

Line of Action

The Line of action simply means the line that follows the applied force on a body. A line of action is a geometrical line passing through the point where force is applied, and it has the direction always in the direction of the Force.

Also read:


Frequently Asked Questions (FAQs)

1. Define 1Newton.

Newton is a unit of measurement of force, and One Newton is defined as the Force acting on a body having a mass of 1 Kg and moving with an acceleration of 1 $\mathrm{m} / \mathrm{s}^2$ m/s2.

2. What is Force meaning? What is the formula for Force?

Force is the external agent that, when applied to a body, brings change in the state of a body, as force can bring a moving body to rest as well as a body at rest can start moving if a force is applied to it. Mathematically, the formula for force is simply the product of the mass of a body and the acceleration produced in the body due to force, and it's written as F = ma, where m and a are the mass and acceleration of a moving body.

3. How many types of Force?

Briefly, different types of force can be categorized in two ways: either it’s a Contact force or it’s a Non-Contact force.

Contact force further can be classified as tension force, Spring Force, Normal Reaction Force, Air Resistance Force, Frictional force, Applied force.

Non-Contact forces are classified in Electrostatic force, Magnetic force and Gravitational force.

4. What is the force acting on a body of mass 2Kg and moving with an acceleration of 9 $\mathrm{m} / \mathrm{s}^2$??

As we know that force is the product of mass and acceleration produced in the body, and according to the question, we have given that m = 2 kg and a = 9, and we have F = ma, so we get,

On putting the values F = 2 × 9 = 18 N, hence, the force acting on the body is 18 newtons.

5. Write some examples of Force.

Most common examples force in our everyday life are: 

  1. Movement of our body is an example of mechanical force.

  2. A door gets opened or closed when we push or pull it and this is due to force applied on the door mechanically by our hands.

  3. Falling of an object towards the ground is due to the gravitational force of attraction between the object and the earth's surface.

6. What is the S.I unit of force?

  The S.I. unit of force is Newton(N).

7. Is force a vector quantity?

 Force is a vector quantity. It has both magnitude and direction.

8. What is the formula unit of force?

The formula unit of force is kgm/s².

9. How to calculate force?

  F = ma

10. What is the C.G.S unit of force?

The C.G.S. unit of force is dyne. It is defined as the force that produces an acceleration of 1 cm/s2$\mathrm{cm} / \mathrm{s}^2$ in a body of mass 1 gram.

11. How do balanced and unbalanced forces affect an object's motion?
Balanced forces are equal in magnitude and opposite in direction, resulting in no change in an object's motion (it remains at rest or continues moving at constant velocity). Unbalanced forces have a non-zero net force, causing acceleration in the direction of the net force. This acceleration can change the object's speed, direction, or both.
12. How do forces act at the atomic level?
At the atomic level, forces manifest as electromagnetic interactions between charged particles. The electrostatic force between protons and electrons holds atoms together. Chemical bonds between atoms in molecules are also a result of electromagnetic forces. At even smaller scales, the strong and weak nuclear forces become important, holding the nuclei of atoms together.
13. How does mass differ from weight?
Mass is a measure of the amount of matter in an object and remains constant regardless of location. Weight, on the other hand, is the force exerted on an object due to gravity and can vary depending on the strength of the gravitational field. On Earth, an object's weight (in Newtons) is approximately its mass (in kilograms) multiplied by 9.8 m/s².
14. How do forces cause deformation in objects?
Forces can cause objects to change shape or size, which is called deformation. When a force is applied, it can stretch, compress, twist, or bend an object. The amount of deformation depends on the strength of the force and the properties of the material. Elastic deformation is temporary and the object returns to its original shape when the force is removed, while plastic deformation is permanent.
15. What is the principle behind a force multiplier?
A force multiplier is a device that allows a small input force to be converted into a larger output force. This is based on the principle of mechanical advantage. Examples include levers, pulleys, and hydraulic systems. While these devices can increase the force applied, they do so by trading off distance or speed – the work done (force times distance) remains constant, ignoring friction.
16. Why is force considered a vector quantity?
Force is a vector quantity because it has both magnitude (strength) and direction. This means that to fully describe a force, you need to specify not just how strong it is, but also which way it's acting. For example, a 10 N force pushing to the right is different from a 10 N force pushing upward.
17. Can a force exist without motion?
Yes, a force can exist without causing motion. For example, when you push against a wall, you're exerting a force, but the wall doesn't move. This is because the wall exerts an equal and opposite force back on you, resulting in no net force and no motion. Forces can also cause deformation without motion, like when you squeeze a stress ball.
18. What is meant by a "net force"?
Net force refers to the overall force acting on an object when all individual forces are combined. It's the vector sum of all forces acting on the object. If the net force is zero, the object's motion doesn't change (it remains at rest or moves at constant velocity). A non-zero net force causes acceleration in the direction of the net force.
19. How does friction relate to force?
Friction is a force that opposes the relative motion of objects or surfaces in contact. It acts parallel to the surfaces and in the direction opposite to the motion or potential motion. Friction can be both helpful (allowing us to walk without slipping) and unhelpful (causing wear and tear in machines). The strength of friction depends on the types of surfaces in contact and the force pressing them together.
20. What's the difference between static and kinetic friction?
Static friction is the force that prevents an object from starting to move when at rest. It acts up to a maximum value, beyond which the object will start moving. Kinetic friction is the force that opposes the motion of an object already in motion. Generally, the maximum static friction is greater than kinetic friction, which is why it's often harder to start pushing an object than to keep it moving.
21. What is the difference between contact and non-contact forces?
Contact forces require physical contact between objects to act, such as friction, tension, or the normal force. Non-contact forces can act at a distance without physical contact, such as gravity, electromagnetism, and nuclear forces. While we often think of contact forces in everyday life, all fundamental forces in nature are actually non-contact forces.
22. How does air resistance act as a force?
Air resistance, also known as drag, is a force that opposes the motion of an object through air. It acts in the direction opposite to the object's motion and increases with the object's speed and cross-sectional area. Air resistance is why skydivers reach a terminal velocity and why cars with more aerodynamic designs can achieve better fuel efficiency.
23. How does the normal force relate to gravity?
The normal force is a contact force that occurs when two surfaces touch. It's always perpendicular to the surface. When an object rests on a horizontal surface, the normal force balances the force of gravity, preventing the object from falling through the surface. On an inclined surface, the normal force is less than the object's weight and perpendicular to the incline.
24. How does the concept of force apply in quantum mechanics?
In quantum mechanics, the classical concept of force is replaced by the idea of interactions between particles through force-carrying particles (like photons for electromagnetic force). Instead of calculating forces directly, quantum mechanics deals with probabilities and energy states. However, in many cases, the quantum treatment leads to results that approximate classical forces at larger scales.
25. How do forces affect fluids differently from solids?
Forces applied to fluids can cause them to flow, unlike solids which tend to deform or move as a whole. In fluids, forces lead to pressure differences, which can cause motion (like in pipes or the atmosphere). Fluids also exert buoyant forces on immersed objects. The study of forces in fluids is the domain of fluid dynamics and involves concepts like pressure, viscosity, and turbulence.
26. How does force relate to acceleration?
Force and acceleration are directly related through Newton's Second Law of Motion, which states that the net force (F) acting on an object equals its mass (m) times its acceleration (a): F = ma. This means that for a given mass, increasing the force will increase the acceleration proportionally. Conversely, for a given force, increasing the mass will decrease the acceleration.
27. How does force relate to momentum?
Force is related to momentum through Newton's Second Law, which can be expressed as F = Δp/Δt, where F is force, p is momentum, and t is time. This means that force is the rate of change of momentum. A force acting on an object changes its momentum, either by changing its velocity (and thus its momentum) or by changing its mass (as in a rocket expelling fuel).
28. What is the relationship between force and energy?
Force and energy are closely related but distinct concepts. Force is what causes an object to accelerate or deform, while energy is the capacity to do work. When a force moves an object, it transfers energy to that object. The work done by a force (which is energy transferred) is equal to the force multiplied by the distance moved in the direction of the force.
29. What is the impulse of a force?
Impulse is defined as the product of force and the time interval over which it acts. Mathematically, impulse = force × time. Impulse is equal to the change in momentum of the object on which the force acts. This concept is important in understanding collisions and impacts, where large forces act for very short times.
30. What is the principle behind hydraulic systems?
Hydraulic systems work on the principle of Pascal's law, which states that pressure applied to an enclosed fluid is transmitted equally in all directions. In a hydraulic system, a small force applied to a small piston can create a much larger force on a larger piston, as the pressure remains the same throughout the fluid. This allows for force multiplication and is used in devices like hydraulic jacks and brakes.
31. What is the relationship between force and pressure?
Pressure is defined as force per unit area. Mathematically, P = F/A, where P is pressure, F is force, and A is the area over which the force is distributed. This means that the same force applied over a smaller area will result in higher pressure. This principle explains why sharp objects can easily penetrate surfaces – they concentrate force over a very small area, creating high pressure.
32. How do forces affect the motion of objects in circular paths?
For an object to move in a circular path, there must be a force constantly pulling it towards the center of the circle. This is the centripetal force. Without this force, the object would move in a straight line tangent to the circle. The centripetal force doesn't change the speed of the object, only its direction. Examples include the tension in a string when swinging an object in a circle, or the gravitational force keeping a planet in orbit.
33. How do forces affect rotational motion?
Forces can cause both linear and rotational acceleration. When a force is applied to an object in a way that doesn't pass through its center of mass, it creates a torque, causing rotational acceleration. The further from the center of mass the force is applied, the greater the torque for a given force. This principle is used in levers and gears.
34. What is the significance of Newton's Third Law of Motion?
Newton's Third Law states that for every action, there is an equal and opposite reaction. This means that forces always occur in pairs – when object A exerts a force on object B, object B simultaneously exerts an equal and opposite force on object A. This law is crucial for understanding the interactions between objects and is the basis for concepts like rocket propulsion.
35. What is the difference between weight and gravitational force?
While often used interchangeably, weight and gravitational force have a subtle difference. Gravitational force is the attractive force between two masses due to gravity. Weight is the force exerted on an object due to gravity in a particular gravitational field. On Earth, an object's weight is essentially the gravitational force it experiences. However, in free fall or orbit, an object can be "weightless" even though it's still experiencing gravitational force.
36. What is the SI unit of force?
The SI unit of force is the Newton (N). One Newton is defined as the force needed to accelerate a mass of 1 kilogram at a rate of 1 meter per second squared (1 N = 1 kg⋅m/s²). This unit is named after Sir Isaac Newton, who formulated the laws of motion.
37. What is the relationship between force and work?
Work is defined as the product of force and displacement in the direction of the force. Mathematically, W = F · d · cos(θ), where W is work, F is force, d is displacement, and θ is the angle between the force and displacement vectors. This means that a force does work on an object only when it causes the object to move in the direction of the force. Work is a transfer of energy and is measured in Joules (N·m).
38. What is centripetal force?
Centripetal force is a force that acts on an object moving in a circular path, directed toward the center of the circle. It's what keeps the object moving in a circular path rather than flying off in a straight line. The centripetal force is always perpendicular to the direction of motion. Examples include the tension in a string when swinging an object in a circle, or gravity keeping planets in orbit around the sun.
39. What is tension force?
Tension force is the force transmitted through a string, rope, cable, or wire when it is pulled tight by forces acting from opposite ends. It's always directed along the length of the wire or rope. Tension force is what allows objects to be suspended or pulled, like in a tug-of-war game or a hanging chandelier.
40. How does the concept of force apply in fluid mechanics?
In fluid mechanics, forces play a crucial role. Pressure in a fluid is a force per unit area. Buoyancy force, which makes objects float, is the upward force exerted by a fluid on an immersed object. Drag forces oppose the motion of objects through fluids. Understanding these forces is essential for designing ships, aircraft, and hydraulic systems.
41. What is the relationship between force and stress?
Stress is defined as force per unit area, similar to pressure but applied to solids. When a force is applied to a solid object, it creates internal forces (stresses) that resist deformation. Different types of stress include tensile stress (pulling apart), compressive stress (pushing together), and shear stress (forces acting tangentially). Understanding stress is crucial in engineering and materials science.
42. What is meant by a conservative force?
A conservative force is one where the work done by the force on an object moving between two points is independent of the path taken. Gravity is an example of a conservative force – the work done lifting an object to a certain height doesn't depend on the path taken. For conservative forces, there's an associated potential energy that can be defined.
43. What is force in physics?
Force is a push or pull acting on an object that can change its motion, shape, or both. It's a vector quantity, meaning it has both magnitude and direction. Forces are fundamental in physics as they explain how objects interact and why things move or stay at rest.
44. What is the difference between mass and force?
Mass is a measure of the amount of matter in an object and is a scalar quantity (it only has magnitude). Force is a push or pull acting on an object and is a vector quantity (it has both magnitude and direction). Mass is measured in kilograms (kg), while force is measured in Newtons (N). Mass is constant for an object, while the forces acting on it can change.
45. How does air pressure relate to force?
Air pressure is the force per unit area exerted by air molecules colliding with surfaces. At sea level, the atmospheric pressure is about 101,325 Pascals or 14.7 pounds per square inch. This means that the air is constantly exerting a significant force on all surfaces, but we don't notice it because it's balanced by equal pressure inside objects. Understanding air pressure is crucial in meteorology, aviation, and many engineering applications.
46. How does the concept of force apply in relativity?
In Einstein's theory of relativity, force is treated differently than in classical mechanics. The concept of force is replaced by four-force, which includes both the classical force and the rate of change of energy. In relativity, the effects of forces can vary depending on the reference frame, and the idea that force equals mass times acceleration doesn't hold in the same way as in classical physics.
47. How does the concept of force fields relate to forces?
A force field is a region of space where a force acts on an object. Examples include gravitational fields, electric fields, and magnetic fields. In a force field, every point in space is associated with a force that would act on an object placed at that point. Force fields provide a way to describe non-contact forces and are fundamental to understanding phenomena in electromagnetism and gravitation.
48. What is the concept of virtual work in relation to forces?
The principle of virtual work states that the total work done by applied forces for any virtual (imaginary) displacement consistent with the constraints of the system is zero when the system is in equilibrium. This principle is powerful in analyzing complex systems, especially in statics, as it allows for the solution of problems without needing to consider all the internal forces in a system.
49. How do forces affect the behavior of materials at different scales?
The effects of forces can vary dramatically depending on the scale. At the macroscopic level, we observe forces as described by classical mechanics. At the microscopic level, intermolecular forces become significant, affecting properties like surface tension and adhesion. At the atomic level, electromagnetic forces dominate. At the subatomic level, strong and weak nuclear forces become crucial. Understanding these scale-dependent effects is important in fields ranging from materials science to particle physics.
50. What is the significance of d'Alembert's principle in dynamics?
D'Alembert's principle is a reformulation of Newton's Second Law that's particularly useful in analyzing constrained systems. It states that the sum of the applied forces and the "inertial forces" (mass times acceleration, taken as negative) for a system must equal zero. This principle allows the equations of motion for complex systems to be written more simply and is especially useful in analyzing systems with constraints.
51. How do forces affect the properties of materials?
Forces can significantly affect material properties. When forces are applied, materials can undergo elastic or plastic deformation, changing their shape or size. Forces can cause materials to stretch (tension), compress, bend, or twist. The study of how materials respond to forces is crucial in materials science and engineering. Properties like elasticity, plasticity, strength, and toughness are all related to how materials behave under various forces.
52. What is the concept of force resolution?
Force resolution is the process of breaking down a single force into two or more component forces, typically at right angles to each other. This is often done using vector addition and trigonometry. Force resolution is useful in analyzing complex systems where forces act in different directions. For example, the weight of an object on an inclined plane can be resolved into components parallel and perpendicular to the plane.
53. How does the concept of force apply in quantum field theory?
In quantum fiel

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Correct Answer: 26 January 1950


Solution : The correct answer is 26 January 1950.

A constitution is a set of rules to govern the country. The making of the Constitution was completed on 26 November 1949, but it became effective on 26 January 1950. It took 2 years, 11 months, and 18 days to frame the constitution, which was drafted by a Constituent Assembly. Dr. B. R. Ambedkar was the chairman of the Drafting Committee.

Correct Answer: adversary


Solution : The correct choice is the first option.

Adversary means an enemy. This helps convey the intended meaning that kangaroos use a defensive technique in which they get their back to a tree and kick at their enemy with their clawed hind feet.

Therefore, the correct answer is adversary.

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